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rmay635703
Joined: 29 Oct 2005
Posts: 25
Location: Somewhere in Wisconsin
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 Posted: Mon Mar 01, 2010 10:06 pm Post subject: 01 5.2 Dodge pickup gets better winter FE with 40% e85 |
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I seem to be able to get slightly better fuel economy on 40% e85 in my 01 Dodge Club Cab v8 (and at that at higher speeds), I am curious if anyone has determined what the max amount of e85 I can burn percentage wise is in this paticular vehicle, (completely stock)
Also I use mystery oil, good or bad with ethanol?
Thanx
Ryan |
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Alcohol
Joined: 17 Apr 2007
Posts: 634
Location: Central Wisconsin
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| Posted: Mon Mar 01, 2010 10:45 pm Post subject: |
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You are at about 28% ethanol if you are 40% E70 (winter grade). That is not likely much of a challenge for your fuel system in closed loop. You might be a tad lean in open loop- such as wide open throttle (the O2 sensor is not looked at in open loop- you are running on the gas map).
Can't really answer you question on this engine. I have had GM brands at 50% at various times with no mods. I know of a few Fords pre-OBD2 also unmodified that have run for a lot of miles on full E85 but the owners were fairly mechanically oriented and experimenters. Same for a few pre-flex fuel Durangos- but they would throw a CEL at over about 60% ethanol. Whenever one is pushing the limit you should keep in mind many ECU's may not have a "learn function" for open loop fueling. |
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rmay635703
Joined: 29 Oct 2005
Posts: 25
Location: Somewhere in Wisconsin
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| Posted: Tue Mar 02, 2010 5:07 pm Post subject: |
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| Alcohol wrote: | You are at about 28% ethanol if you are 40% E70 (winter grade). That is not likely much of a challenge for your fuel system in closed loop. You might be a tad lean in open loop- such as wide open throttle
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I don't WOT ever, try to get best fuel economy whatever I happen to be driving.
My 98 Buick never had any issue with 50% e85 either, I am more curious though on this gussler where I can go with e85 before things get hairy with check engine lights missing and the like.
I know dodge was usually a little backword compared to GM on the computerized stuff.
Cheers
Ryan |
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Alcohol
Joined: 17 Apr 2007
Posts: 634
Location: Central Wisconsin
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| Posted: Tue Mar 02, 2010 11:28 pm Post subject: |
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Which engine is it?
Marvel- I have seen a number of folks using it but not sure what it is really doing for them. I even wonder what the endpoint of distillation is on it and if it is actually leading to deposits. If an FFV does not need it- why would it be different for a non-FFV? My FFV Taurus has 217,400 miles on it and never need oil added up thru a 5,000 mile oil change- in fact I think I did not even need make up oil a few times I did not have time to change oil and went to 8,000 miles. Perhaps I do not understand what you are trying to acheive with the Marvel product. MPG? I know a few that ran it and after a long period of testing decided it was not paying. |
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rmay635703
Joined: 29 Oct 2005
Posts: 25
Location: Somewhere in Wisconsin
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| Posted: Wed Mar 03, 2010 6:37 pm Post subject: |
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| Alcohol wrote: | Which engine is it?
Marvel- I have seen a number of folks using it but not sure what it is really doing for them. I even wonder what the endpoint of distillation is on it and if it is actually leading to deposits. Perhaps I do not understand what you are trying to acheive with the Marvel product. MPG? I know a few that ran it and after a long period of testing decided it was not paying. |
Marvel is upper cylinder lubricant, it also can be used to unstick parts and remove sludge if used properly. The stuff has been on the market over 70 years and it has worked well for me. check bobistheoilguy.com (or somethng similar) if you want a tech write up. It is one of the few snake oils that works. But YMMV.
I've found that motors that do not run correctly AKA miss, etc will smooth out when marvel is added, our 93 350 wouldn't run very well at all until we started adding it. Old motors that like lead are benefitted from it and diesels that used hi sulphur fuel get better FE with it. That isn't to say there aren't other additives that do the same, Marvel is one of the cheaper ones. Especially purchased by the gallon.
All that said my dodge is NOT affect MPG wise when running normal fuels with MMO, it appears to start up faster with it in the cold weather when I am using ethanol. Which is my primary reason for using it, it also protects seals and gaskets (supposedly)
Marvel does not generally leave deposits, normally it removes them but ethanol is likely not the intended application so who knows, foreign territory.
And the FE benefit of Marvel again is primarily on diesels and older vehicles, my buick was affected quite dramatically when it had an antifreeze leak into the engine (aka it would run) I also have experienced a large winter time only fuel economy improvement when using MMO at double the recommended dose during the winter, the same effect that premium has on my winter fuel economy but again only on the buick and much cheaper than actually using premium gas.
The only way to know if Marvel does anything for your paticular setup is to add a little as every vehicle reacts differently, from no reaction at all to rather dramatic. And obviously if the thing doesn't run right it can cover up the problem (my dads coaxed near non runners to operable since the 60's with it)
Another cleaner that works is acetone in your fuel, best fuel injector cleaner and a lot cheaper than seafoam which also has acetone components in it. Just don't mix acetone and ethanol and don't use acetone continously.
Oh and to add my last fillup was 16.9mpg mix driving a bunch of 3 mile in town trips and one long highway trip approx 70% highway, 30% short in town trips, rather impressive compared to my normal winter MPGs. The best I have ever gotten on this truck was 18mpg just for reference and that was only highway.
Cheers
Ryan |
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